Liaoning area eat iodized salt.

The standard of "Iodine Content of Edible Salt" is uniformly implemented nationwide. The standard stipulates that the average level of iodine content of edible salt products is 20 mg/kg-30 mg/kg, but the health administrative departments across the country can choose the average level of iodine content of edible salt suitable for the local situation according to the actual level of iodine nutrition of the local population.

The standard iodine content of edible salt set by the Liaoning Provincial Department of Health is: 25 mg/kg ± 30% iodine added to edible salt for general residents (with a permissible fluctuation range of 18-33 mg/kg), and 30 mg/kg ± 30% iodine added to salt for pregnant women (with a permissible fluctuation range of 21-39 mg/kg).

Misconceptions

Consumption of iodized salt is prepared by adding potassium iodate or potassium iodide to table salt at a certain ratio (35 mg ± 15 mg of iodine per kg). It contains trace amounts of iodine, which is one of the essential trace elements and is known as the intelligence element. The content of iodine in the human body is only about 30mg, half of which is in the thyroid gland and the rest is distributed in other tissues. Iodine is an important raw material for the synthesis of essential thyroid hormones, which affect the production, development and metabolism of the body, and the brain is its first target organ.

Iodine is the main raw material for the synthesis of thyroxine in the body, to protect the thyroid gland from iodine in radioactive fallout, iodine can be absorbed rapidly by the body, leading to cancer and hereditary diseases, iodine's half-life of 8 days, the harm to personal health is quite large, it will accumulate on the thyroid gland and cause cancer. If you take concentrated potassium iodide in a timely manner after a nuclear accident, you can reduce the amount of radiation to the thyroid gland, thus reducing the risk of cancer.

So, people working in nuclear power plants are only taking iodine tablets to reduce the risk of cancer if they need to do their jobs, or if they are in a nuclear contaminated area.